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<pre><span class="sourceLineNo">001</span>package imagingbook.calibration.zhang.util;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.awt.Color;<a name="line.3"></a>
<span class="sourceLineNo">004</span><a name="line.4"></a>
<span class="sourceLineNo">005</span>import org.apache.commons.math3.linear.RealMatrix;<a name="line.5"></a>
<span class="sourceLineNo">006</span><a name="line.6"></a>
<span class="sourceLineNo">007</span>import ij.ImagePlus;<a name="line.7"></a>
<span class="sourceLineNo">008</span>import ij.gui.Plot;<a name="line.8"></a>
<span class="sourceLineNo">009</span>import ij.gui.PlotWindow;<a name="line.9"></a>
<span class="sourceLineNo">010</span>import ij.process.FloatProcessor;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import imagingbook.calibration.zhang.Camera;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import imagingbook.lib.math.Matrix;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span><a name="line.14"></a>
<span class="sourceLineNo">015</span>/**<a name="line.15"></a>
<span class="sourceLineNo">016</span> * This class defines ImageJ-related utility methods used for camera<a name="line.16"></a>
<span class="sourceLineNo">017</span> * calibration.<a name="line.17"></a>
<span class="sourceLineNo">018</span> * @author WB<a name="line.18"></a>
<span class="sourceLineNo">019</span> *<a name="line.19"></a>
<span class="sourceLineNo">020</span> */<a name="line.20"></a>
<span class="sourceLineNo">021</span>public class IjUtil {<a name="line.21"></a>
<span class="sourceLineNo">022</span>        <a name="line.22"></a>
<span class="sourceLineNo">023</span>        /**<a name="line.23"></a>
<span class="sourceLineNo">024</span>         * Creates a float-type image of the supplied matrix.<a name="line.24"></a>
<span class="sourceLineNo">025</span>         * Matrix rows/columns correspond to image rows/columns.<a name="line.25"></a>
<span class="sourceLineNo">026</span>         * Typical usage: makeImage("my matrix", M).show()<a name="line.26"></a>
<span class="sourceLineNo">027</span>         * @param title the image title<a name="line.27"></a>
<span class="sourceLineNo">028</span>         * @param M the matrix to be displayed<a name="line.28"></a>
<span class="sourceLineNo">029</span>         * @return the resulting image<a name="line.29"></a>
<span class="sourceLineNo">030</span>         */<a name="line.30"></a>
<span class="sourceLineNo">031</span>        public static ImagePlus makeImage(String title, RealMatrix M) {<a name="line.31"></a>
<span class="sourceLineNo">032</span>                float[][] fdata = Matrix.duplicateToFloat(M.transpose().getData());<a name="line.32"></a>
<span class="sourceLineNo">033</span>                ImagePlus im = new ImagePlus(title, new FloatProcessor(fdata));<a name="line.33"></a>
<span class="sourceLineNo">034</span>                im.show();<a name="line.34"></a>
<span class="sourceLineNo">035</span>                return im;      <a name="line.35"></a>
<span class="sourceLineNo">036</span>        }<a name="line.36"></a>
<span class="sourceLineNo">037</span>        <a name="line.37"></a>
<span class="sourceLineNo">038</span>        // -------------------------------------------------------------------<a name="line.38"></a>
<span class="sourceLineNo">039</span>        <a name="line.39"></a>
<span class="sourceLineNo">040</span>        <a name="line.40"></a>
<span class="sourceLineNo">041</span>        public static PlotWindow plotLensDistortionFunction(Camera cam, double rmax) {<a name="line.41"></a>
<span class="sourceLineNo">042</span>                int n = 100;<a name="line.42"></a>
<span class="sourceLineNo">043</span>//              double[] K = cam.getK();<a name="line.43"></a>
<span class="sourceLineNo">044</span>                double[] xVals = new double[n];<a name="line.44"></a>
<span class="sourceLineNo">045</span>                double[] yVals = new double[n];<a name="line.45"></a>
<span class="sourceLineNo">046</span>                for (int i = 0; i &lt; n; i++) {<a name="line.46"></a>
<span class="sourceLineNo">047</span>                        double r = i * (rmax / n);<a name="line.47"></a>
<span class="sourceLineNo">048</span>                        //double d = cam.distFun2(r * r); //getRadialDistortion(r, K);<a name="line.48"></a>
<span class="sourceLineNo">049</span>                        double d = cam.D(r);<a name="line.49"></a>
<span class="sourceLineNo">050</span>                        xVals[i] = r;<a name="line.50"></a>
<span class="sourceLineNo">051</span>                        yVals[i] = d;<a name="line.51"></a>
<span class="sourceLineNo">052</span>                }<a name="line.52"></a>
<span class="sourceLineNo">053</span>                Plot plot = new Plot("d(r)", "x", "f(x)");<a name="line.53"></a>
<span class="sourceLineNo">054</span>                plot.setColor(Color.BLUE);<a name="line.54"></a>
<span class="sourceLineNo">055</span>                plot.setLimits(0, 1.25, -0.1, 0.1);<a name="line.55"></a>
<span class="sourceLineNo">056</span>                plot.addPoints(xVals, yVals, Plot.LINE);<a name="line.56"></a>
<span class="sourceLineNo">057</span>                plot.draw();<a name="line.57"></a>
<span class="sourceLineNo">058</span>                return plot.show();<a name="line.58"></a>
<span class="sourceLineNo">059</span>        }<a name="line.59"></a>
<span class="sourceLineNo">060</span>        <a name="line.60"></a>
<span class="sourceLineNo">061</span>        // ---------------------------------------------------------------<a name="line.61"></a>
<span class="sourceLineNo">062</span>        <a name="line.62"></a>
<span class="sourceLineNo">063</span>//      public void showJacobian(MultivariateMatrixFunction jacobianFun, RealVector point) {<a name="line.63"></a>
<span class="sourceLineNo">064</span>//              double[][] J = jacobianFun.value(point.toArray());<a name="line.64"></a>
<span class="sourceLineNo">065</span>//              FloatProcessor fp = new FloatProcessor(J[0].length, J.length);<a name="line.65"></a>
<span class="sourceLineNo">066</span>//              for (int i = 0; i &lt; J.length; i++) {<a name="line.66"></a>
<span class="sourceLineNo">067</span>//                      for (int j = 0; j &lt; J[i].length; j++) {<a name="line.67"></a>
<span class="sourceLineNo">068</span>//                              fp.setf(j, i, (float) J[i][j]); <a name="line.68"></a>
<span class="sourceLineNo">069</span>//                      }<a name="line.69"></a>
<span class="sourceLineNo">070</span>//              }<a name="line.70"></a>
<span class="sourceLineNo">071</span>//              (new ImagePlus("Jacobian", fp)).show();<a name="line.71"></a>
<span class="sourceLineNo">072</span>//      }<a name="line.72"></a>
<span class="sourceLineNo">073</span>}<a name="line.73"></a>




























































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